Mold assembly for forming a seal unit

Details Mold assembly for forming a seal unit Mold assembly for forming a seal unit

1986-11-24

1988-04-19

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

295271, 264266, 425DIG47, 4251291, B29C 6564

Patent

active

047386061

ABSTRACT:
A mold assembly for making fluid seals. The mold includes an outside diameter surface on a fixed part and a seal flange support surface on another portion of the fixed part. A seal casing with a shouldered mounting flange having major and minor outside diameters and a radial flange is positioned in the fixed mold part. A movable mold member includes an upper, outer cylindrical surface for engaging the inside surface of the casing major diameter to form a flash barrier which moves during mold closure. Both the fixed mold part and the movable mold part include inwardly directed surfaces defining the mold cavity; the flange support is apertured for the elastomer to flow from the seal body-forming part of the cavity to the heel gasket-forming part of the cavity. The heel-forming cavity part lies between the lower part of the inside surface of the mold and the outer surface of the casing minor diameter.

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patent: 3993420 (1976-11-01), Haas et al.
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patent: 4555376 (1985-11-01), Butler
patent: 4580962 (1986-04-01), Haas
patent: 4689190 (1987-08-01), Peisker et al.

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